1. 悬浮;（鸟、昆虫等）振翅悬停
    To hover means to stay in the same position in the air without moving forwards or backwards. Many birds and insects can hover by moving their wings very quickly.

hover

    e.g. Beautiful butterflies hovered above the wild flowers...
           美丽的蝴蝶在野花上方飞舞。
    e.g. A police helicopter hovered overhead...
           一架警方直升机悬停在头顶上空。

2. 逗留在一处;徘徊;踌躇
    If you hover, you stay in one place and move slightly in a nervous way, for example because you cannot decide what to do.

    e.g. Judith was hovering in the doorway...
           朱迪丝在门口徘徊。
    e.g. With no idea of what to do for my next move, my hand hovered over the board.
           不知道下一步该怎么走，我一只手在棋盘上举落不定。

3. 处于不确定状态;犹豫不决
    If you hover, you are in an uncertain situation or state of mind.

hover

    e.g. She hovered on the brink of death for three months as doctors battled to save her...
           3个月来她一直在死亡线上徘徊，而医生则在全力挽救她的生命。
    e.g. Just as at the turn of the century, we hover between great hopes and great fears.
           正如世纪之交时那样，我们再次在巨大的希望和忧虑之间彷徨不定。

4. （价格、价值、分数等）上下波动左右摇摆
    If something such as a price, value, or score hovers around a particular level, it stays at more or less that level and does not change much.

    e.g. In September 1989 the exchange rate hovered around 140 yen to the dollar...
           1989年9月，日元对美元的汇率一直在140比1的水平上下浮动。
    e.g. His golf handicap hovered between 10 and 12.
           他的高尔夫球差点一直在10杆到12杆之间徘徊。